Wrench



(No Model.)

J. T. MATTHEWS.

WRENCH.

' No. 513,271. Patented Jan. 23,1894.

ms NATIONAL LITNOGRAI'HING COMPANY.

Aaum Ten 0. a.

NITED STATES PATENT OFFIcE.

JAMES THOMAS MATTHEWS, OF SHELBYVILLE, INDIANA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 513,271, dated January23, 1894.

I Application filed March 18, 1893. Serial No. 466,742. (No model.

To all whom it may concern-.-

Be it known that I, JAMEs THoMAs MAT- THEWS, a citizen of the UnitedStates, residing at Shelbyville, in the county of Shelby and State ofIndiana, have invented a new and useful Improvement in \Vrenches,commonly known as Monkey-Wrenches, of which the following is aspecification.

Myinvention relates to an improvement in wrenches, and consists in thefeatures hereinafter specified in the claim.

The objects claimed for my invention are: economy in time; greaterfacility in manipulating my wrench over similar implements; and alsoalways having at hand an implement combining the functions of the wrenchand hammer. I point out these objects by means of the figures shown inaccompanying drawings.

Figure 1: in the annexed drawings illustrating my invention representsin perspective my invention as completed and in position to operate on anut or pipe. Fig. 2: represents the movable jaw sliding on the mainshaft of the wrench.

Similarletters referto similar parts-throughout the several views.

a Fig.1 represents the main body or hammer part of the wrench, moldedwith a perfectly square face on its inner side. The lower portion may bemade in the form of .a hatchet or claw hammer.

In the annexed drawings illustrating myinvention b Fig. 1 is thehorizontal movable jaw. 0 represents a band or loop, fastened to themovable jaw by a hinge at d and passes around the main shaft ofthewrench, and holds in position the movable jaw b. h h h h are paralleldiagonal receiving notches, for the purpose of receiving acorrespondingly inclined and downward pro-. truding dowel, shown at e inFig. 2, being attached to the under side of the movable jaw b Fig. 2.

In theannexeddrawingsillustrating my in- 5 vention Fig. 2 represents aperspective view of the movable jaw, with its protruding dowel e, andhinge band or loop 0, showing its hinge d as the same materiallyappears.

The shank of the wrenchv is constructed of iron being made a rightprism,containing the parallel and oblique dowel holes 71. h h Fig. 1, and themovable hand-hold or handle, f Fig. 1, may be so constructed as to beeasily and readily taken off and put on again, in order that the movablejaw may be at any time quickly taken oif by slipping the same the entirelength of the main shaft of handle.

The working portion or hammer part of my invention has a peculiarprotuberance at the point in the head contiguous to the entrance of theshank to said head, as shown at Win Fig.1. The purpose of theprotuberance t is to act as a kind of fulcrum on which the movable jawworks as a lever in lifting the dowel pin from the inclined aperturesalong the front side of the shank. Said protuberance is made ofsufficient size to leave space above in which the movable jaw 19 Fig. 1can be tilted over at the top sufficiently far to withdraw the dowel pin6 Fig. 2 from the dowel holes h h h Fig. 1.

What I claim as my invention is- A wrench, comprising the shank g with ahandle f at one end and afixed head a at the other end,said shankprovided with inclined apertures along its front sides,in combinationwith the movable jaw b and the pivoted loop 0; said movable jaw beingprovided with an inclined dowel pin adapted to engage said apertures andhaving a rounded corner above said pin, substantially as described.

JAMES THOMAS MATTHEWS. Witnesses:

TELLESS BRooKs CARTER,

SAMUEL ROBINSON.

